{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273387437",
    "entityType": "User",
    "nonce": "0x96a70fc5386b64f227d8ea4489d88e7263a44cce8ef94ed13448ac9309c29c10",
    "signature": "0xf89d05401869d2aa1dbe13a63aafafa73ed6e517d9e3a7ca0c69a4dd9aade2977cf5f08465716c06df22e0a8d1e6213f19e89d9d439740aeef37264e8b165cf21c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}